Implement for abrasion
US4571184A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Apr 19, 1983 |
| Grant date | Feb 18, 1986 |
| Priority date | — |
| Expiry date | Apr 19, 2003 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB24B3/605
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A dental implement for abrasion, comprising a steel spatula coated on its opposite broad surfaces with an abrasive coating of tungsten applied to the steel surfaces with the aid of an electric arc. The implement is particularly useful for dentistry, because the tungsten has very little effect on the relatively hard tooth enamel but is quite abrasive on such dental materials as gold, amalgam, and dentine. Thus the implement is especially suited to smoothing tooth fillings of various types where the tooth enamel is to be left intact but the foreign material is to be evened out to make as smooth a transition as possible to the surrounding tooth enamel.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.